CHAPTER ONE
1.0   INTRODUCTION
As-built survey has been an essential element in the development of the human environment since the beginning of recorded history. It is performed to verify that a particular improvement on a parcel of land has been built according to the proposed design plans, specifications and setback requirement. It shows how any field change made during construction fit the overall design of the development. If this As-built data are not obtained, engineers, architect, land planners, clients and other may be misled in assuming that the construction work performed conforms perfectly to the original drawing  .It is used to document the size and / or location of an improvement used to aid in the design of addition of buildings, extention, sewer and parking lot  expansion. It help landing institution to protect their interest, accurate decision making, updating of information and as a reference material for student ministry and individual.
Medium density layout, Ifuho, is a residential estate located in Ikot Ekpene Local Government Area, Akwa Ibom State. It is made up of twenty-five(25) existing building with internal access road, available space which is used for agricultural farming.
Due to increase in population, scarcity of houses, political and topographic effect, medium density layout needs As-built survey in order to determine the final location of existing features and the available space for proper planning ,redesigning and expansion.
The aim of As-built survey on medium density layout is to produced an As-built plan to ascertain the final location of available detail and available space for further development of the estate by way of expansion.
The processes involved in the achievement or the above aim is reported here forthwith.
STATEMENT OF PROBLEM.
Due to political reason, cost and topographic of the area, errors(instrument, atmospheric, human etc),buildings were not built according to the design. Medium density layout need As-built survey to determine the final location of existing feature, thus enhances proper use of available space for expansion.
AIM AND OBJECTIVES
The aim of this project was to produce an As-built plan of medium density layout, Ifuho, Ikot Ekpene Local Government Area for the purpose of ascertaining variations of detail as constructed from the design.
This was achieved through the following objectives:
Establishing the perimeter using traverse.
Measurement of relative position of the detail within the study area.
Preparation of an overlay plan which facilitated the comparison.
To explore the power of computer application software especially in the plan production.
SCOPE AND LIMITATION
The scope of this project, amongst other things is limited to the production of As-built plan of medium density layout using traverse method through the objective stated in 1.2 above.
However, height information was not considered.
SIGNIFICANCE OF STUDY.
Production of As-built survey plan of medium density layout will be significant in the following ways:
For accurate decision making to the developer for physical planning and further development and/or expansion of the estate.
For updating of information and quick retrieval of information for environmental management for the government.
As a reference material for student, ministry and individual for further research work.
Enhance the knowledge of the student in the area of As-built survey.